In 1955, Michael Buonocore, DDS docu¬mented the use of phosphoric acid to improve adhesion of resin to dental enamel. Since Dr. Buonocore’s observation, adhesion dentistry has played an important role in the evolution of dentistry. Bonding proce¬dures are performed by dentists every day, ranging from bonding orthodontic brackets to delivering stunning porcelain veneers. Because adhesion dentistry is such an indispensable part of the day to day practice of dentistry, a review of its principles w